Medical Dictionary

photocatalysis

noun pho·to·ca·tal·y·sis \ˌfōt-ō-kə-ˈtal-ə-səs\
plural pho·to·ca·tal·y·ses \-ˌsēz\

Medical Definition of PHOTOCATALYSIS

:  the acceleration of a chemical reaction by radiant energy (as light) acting either directly or by exciting a substance that in turn catalyzes the main reaction—compare photoinactivation 1

Browse

How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears